Displacement design spectrum method suitable for Chinese aseismic design specifications

Abstract

The invention discloses a displacement design spectrum method suitable for Chinese aseismic design specifications. The invention relates to a displacement design spectrum method suitable for China aseismic design specifications, aims to overcome the defect that a displacement design spectrum is not given in China 'Building Aseismic Design Specifications'. A displacement design spectrum with a clear mathematical expression is given by increasing two parameters of a control point period TD and a peak ground displacement PGD; a large amount of actual seismic oscillation is taken as a data basis, and parameter values of a displacement design spectrum are given based on a seismic oscillation selection method of spectrum matching; the displacement design spectrum and the acceleration design spectrum can be mutually converted; and when the period is smaller than 5Tg (standard design spectrum characteristic period), the acceleration design spectrum is consistent with a standard acceleration design spectrum, and the method can be used for determining the seismic displacement requirement of a building structure in a displacement-based aseismic design method.

Description

technical field [0001] The invention relates to the technical field of anti-seismic design of building structures, in particular to a displacement design spectrum method applicable to Chinese anti-seismic design codes. Background technique [0002] Scientific and effective seismic design theory is the most effective way to improve the ability of buildings to resist earthquakes. No matter which form of seismic design theory is adopted, quantitative description of seismic action is an essential step. Seismic action can mainly be described in three different forms: force, energy, and displacement. As a result, the force-based seismic design method, the energy-based seismic design method and the displacement-based seismic design method have also been produced and developed. After the structure yields under strong earthquake and enters the elastoplastic deformation stage, the degree of damage does not depend on the instantaneous seismic force. It is more reasonable to use displ...

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Problems solved by technology

However, in these methods, there are significant differences between the classification of displacement design spectrum parameters and the classification of code-related parameters, which makes it difficult for these methods to be applied to Chinese codes.

In addition, the force-based seismic design method still occupies a dominant position in engineering practice, and the acceleration design spectrum obtained by the transformation of the existing displacement design spectrum method is usually quite different from the standard acceleration design spectrum, which leads to contradictions between these methods and the standard method

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